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Closed-Cell Foam Insulation

Closed-cell spray foam insulation is among the most efficient insulating materials available, providing one of the highest R-values of any insulation. In addition, it is noted for its rigidity and strength, as well as being a highly effective air and moisture barrier. Closed-cell insulation provides an air-tight seal that can increase the energy efficiency of your home.

The Process

Spray polyurethane foam is a thermoset cellular plastic insulating material formed by combining methylene diphenyl diisocyanate (MDI) and a polyol blend. The reaction between these two materials releases heat and within a few minutes foam is formed and is typically no longer tacky or sticky. Full cure may be reached in a time range of about 8 to 24 hours, depending on the product and site conditions.

Start to finish, we protect you and your property. Prior to starting, we will explain how the process will work, from beginning to end. We want to make sure that there is no confusion to how the process will take place and when re-entry to the space is allowed.

We first address all safety measures with you. Any lights and electrical outlets are also always taped prior to install. Then, we cover your floors, garage door openers, rails, windows and other items that we want to protect from overspray of the foam with plastic sheeting. Of course, at the end of every project, we take our time to make sure that the area is clean to the point you wouldn’t even know that we were there, except for your newly insulated space.

Open or Closed Cell?

Many people are unsure about the different types of foam and wonder whether to have open-cell or closed-cell foam installed. Open-cell foam is full of cells that aren’t completely encapsulated. In other words, the cells are deliberately left open. This makes the foam a softer, more flexible material.

Closed-cell foam is made up of cells that are, as the name suggests, completely closed. The cells are pressed together, so air and moisture are unable to get inside the foam. Because of this, closed cell foam is much more rigid and stable than open cell foam. Closed-cell foam is much denser than open-cell foam. Most open-cell foam has a density of about .5 pounds per cubic foot. Closed-cell foam can be over three times that, with a density of 1.75 pounds per cubic foot or more, making it a much more efficient insulator.

Closed-cell spray foam insulates and air seals wherever it is applied. Air sealing the building envelope with sprayed-in foam insulation also helps address moisture ingress to reduce the risk of mold and mildew growth as well as the formation of ice dams in colder climate zones during the winter months. When you compare foam insulation with traditional fiberglass insulation and cellulose insulation, sprayed insulation minimizes air infiltration, it assists in limiting moisture vapor from entering and escaping the home, which in turn reduces the load on heating and cooling systems.

Popular Questions

One of the unique abilities of spray foams is getting into small cracks and crevices. Once the foam is applied directly into the cracks, it expands and dries quickly while blocking air and water. Foam insulation isn’t just a blockade for air and water, but for heat and cold as well.

One of the benefits of spray foam insulation is reducing the amount of pollen, or allergens that get through the walls. Once the spray foam gets into the small crevices it creates a hard barrier. This deters rodents and insects. By keeping away insects and rodents, you are also reducing the chances of getting sick from rodent waste.

Due to its density and hardness, closed cell insulation can actually strengthen the structure of your walls.

Spray foam reduces energy consumption and protects your building against mold and mildew growth. Closed Cell Spray foam also lasts longer than any other type of insulation, it consumes less materials.

Even though foam insulation requires more of an investment up front than other types of insulation, it saves you more money on bills in the long-term.